It has been mentioned here that bass (if that is your target fish) prefer "bushy" structure. If you have the time, I would cut some of those cedars, put concrete or a block around the base, then make them sit upright on the bottom with just the tops sitting out of the water. First, it makes them easy to spot, second, it gives structure in a variety of depths, suiting several different needs. You could also "tee-pee" three or four cedars, tying the tops together and weighting the bases.
